Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2019, Vol. 55 ›› Issue (5): 798-804.DOI: 10.13209/j.0479-8023.2019.071

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Using the Data from One Receiver to Estimate Running Velocity of High-Speed Train

WANG Xiaokai1,2, WANG Baoli2,3, CHEN Wenchao1,2,†, LI Jiaqi2,4   

  1. 1. School of Information & Communication Engineering, Xi’an Jiaotong University, Xi’an 710049 2. The Joint Research Group of High-Speed Train Induced Seismology, Beijing 100029 3. Xi’an Research Institute of China Coal Research Institute, Xi’an 710049 4. School of Earth and Space Sciences, Peking University, Beijing 100871
  • Received:2019-07-23 Revised:2019-08-12 Online:2019-09-20 Published:2019-09-20
  • Contact: CHEN Wenchao, E-mail: wencchen(at)xjtu.edu.cn

利用单检波器数据估计高铁列车运行速度

王晓凯1,2, 王保利2,3, 陈文超1,2,†, 李嘉琪2,4   

  1. 1. 西安交通大学信息与通信工程学院, 西安 710049 2. 高铁地震学联合研究组, 北京 100029 3. 中煤科工集团西安研究院有限公司, 西安 710049 4. 北京大学地球与空间科学学院, 北京 100871
  • 通讯作者: 陈文超, E-mail: wencchen(at)xjtu.edu.cn
  • 基金资助:
    国家自然科学基金(41974131, 41774135)、中央高等学校基本科研业务费(bgjs2018003, xjj2016065)和国家重点研发计划(2017YFB0202902)资助

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Abstract:

Based on the fixed carriage structure assumption, the acquired dataset from one receiver near the highspeed railway can be used to estimate running velocity of high-speed train (HST). We derive the relationship between the load function and the speed of the railway, and then propose the HST velocity estimating method based on velocity scanning. Firstly, this method generates a series of amplitude spectra of load function according to a series of preset velocity. Then a series of cross-correlation coefficients between the pre-computed amplitude spectra and the amplitude spectrum of the real signal from one pre-buried receiver can be computed. The velocity with maximum cross-correlation coefficients is chosen as a final velocity estimation of HST. Finally, one synthetic data example and some real data examples illustrate our method’s effectiveness. Furthermore, the proposed method has the potential to be further extended to estimate running velocity of moving objects with the fixed structure in other road traffic.

Key words: velocity estimation, high-speed train, amplitude spectrum, cross-correlation, velocity scanning

摘要：

在列车结构基本上固定的前提下, 仅利用高铁线路隔离区外单个检波器采集的地震数据来估计高铁的运行速度。通过给出列车经过铁路上一点时该点的受力函数振幅谱与列车运行速度的关系, 提出一种基于速度扫描的列车速度估计方法。首先根据列车结构参数及预设列车运行速度生成一系列受力函数振幅谱, 然后计算各种速度下的受力函数振幅谱与单个检波器所接收到信号振幅谱的互相关函数, 最终选取互相关函数值最大时对应的速度作为列车运行速度的估计值。合成数据及实测数据的结果均证明所提方法的合理性, 有望将此方法推广到其他道路交通中具有固定结构交通工具的速度估计中。

关键词: 速度估计, 高铁列车, 振幅谱, 互相关, 速度扫描

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